Its not a backpack is my laptop bag.
1. Laptop.
2. Laptop Cables
3. USB Stick
4. Phlack
5. LFS -> Because im an elitest bastard who likes doing things from scratch.
6. FreeBSD
7. Knoppix
8. DVD of hak.5 episodes ;)
9. Cell Phone
10. Linux Magazines
11. Lots of other secret hacking things.